12132323420 has 48 divisors (see below), whose sum is σ = 30121640640. Its totient is φ = 4016216064.

The previous prime is 12132323419. The next prime is 12132323453. The reversal of 12132323420 is 2432323121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1490069 + ... + 1498188.

It is an arithmetic number, because the mean of its divisors is an integer number (627534180).

Almost surely, 2^12132323420 is an apocalyptic number.

12132323420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132323420 is an abundant number, since it is smaller than the sum of its proper divisors (17989317220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12132323420 is a wasteful number, since it uses less digits than its factorization.

12132323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988302 (or 2988300 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12132323420 its reverse (2432323121), we get a palindrome (14564646541).

The spelling of 12132323420 in words is "twelve billion, one hundred thirty-two million, three hundred twenty-three thousand, four hundred twenty".